Signal and Communication Systems: For telephone, alarm, voice and data, and other communication systems, provide 16 mm2 minimum insulated grounding conductor in raceway from a separate grounding electrode clean system to each service location, terminal cabinet, wiring closet, and central equipment location.
Service and Central Equipment Locations and Wiring Closets: Terminate grounding conductor on a 6.4 by 50 by 300 mm grounding bus.
Terminal Cabinets: Terminate grounding conductor on cabinet grounding terminal.
